public String DecryptMessage(String encryptedMessage, char[] passPhrase)
{
// Remove the Base64 encoding
byte[] rawMessage = Convert.FromBase64String(encryptedMessage);
Stream inputStream = new MemoryStream(rawMessage);
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory pgpF = new PgpObjectFactory(inputStream);
PgpEncryptedDataList enc = null;
PgpObject o = pgpF.NextPgpObject();
//
// the first object might be a PGP marker packet.
//
if (o is PgpEncryptedDataList)
{
enc = (PgpEncryptedDataList)o;
}
else
{
enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
}
PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
Stream clear = pbe.GetDataStream(passPhrase);
PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
PgpLiteralData ld = (PgpLiteralData)pgpFact.NextPgpObject();
Stream unc = ld.GetInputStream();
String message;
using (StreamReader reader = new StreamReader(unc, Encoding.UTF8))
{
message = reader.ReadToEnd();
}
// Finally verify the integrity
if (pbe.IsIntegrityProtected())
{
if (!pbe.Verify())
{
throw new MessageVerificationException("Failed to verify the message. It might have been modified in transit.");
}
}
return(message);
}
public void DecryptFile(Stream outStream, Stream inputStream, char[] passPhrase)
{
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory pgpF = new PgpObjectFactory(inputStream);
PgpEncryptedDataList enc = null;
PgpObject o = pgpF.NextPgpObject();
//
// the first object might be a PGP marker packet.
//
if (o is PgpEncryptedDataList)
{
enc = (PgpEncryptedDataList)o;
}
else
{
enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
}
PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
Stream clear = pbe.GetDataStream(passPhrase);
PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
PgpLiteralData ld = (PgpLiteralData)pgpFact.NextPgpObject();
Stream unc = ld.GetInputStream();
byte[] buf = new byte[1 << 16];
int len;
while ((len = unc.Read(buf, 0, buf.Length)) > 0)
{
outStream.Write(buf, 0, len);
}
// Finally verify the integrity
if (pbe.IsIntegrityProtected())
{
if (!pbe.Verify())
{
throw new MessageVerificationException("Failed to verify the message. It might have been modified in transit.");
}
}
}
private byte[] DecryptMessageBuffered(
byte[] message)
{
PgpObjectFactory pgpF = new PgpObjectFactory(message);
PgpEncryptedDataList enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
Stream clear = pbe.GetDataStream(pass);
PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
PgpCompressedData cData = (PgpCompressedData)pgpFact.NextPgpObject();
pgpFact = new PgpObjectFactory(cData.GetDataStream());
PgpLiteralData ld = (PgpLiteralData)pgpFact.NextPgpObject();
MemoryStream bOut = new MemoryStream();
if (!ld.FileName.Equals("test.txt") &&
!ld.FileName.Equals("_CONSOLE"))
{
Fail("wrong filename in packet");
}
if (!ld.ModificationTime.Equals(TestDateTime))
{
Fail("wrong modification time in packet: " + ld.ModificationTime.Ticks + " " + TestDateTime.Ticks);
}
Stream unc = ld.GetInputStream();
byte[] buf = new byte[1024];
int len;
while ((len = unc.Read(buf, 0, buf.Length)) > 0)
{
bOut.Write(buf, 0, len);
}
if (pbe.IsIntegrityProtected() && !pbe.Verify())
{
Fail("integrity check failed");
}
return(bOut.ToArray());
}
/**
* decrypt the passed in message stream
*/
private byte[] DecryptMessage(
byte[] message)
{
PgpObjectFactory pgpF = new PgpObjectFactory(message);
PgpEncryptedDataList enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
Stream clear = pbe.GetDataStream(pass);
PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
PgpCompressedData cData = (PgpCompressedData)pgpFact.NextPgpObject();
pgpFact = new PgpObjectFactory(cData.GetDataStream());
PgpLiteralData ld = (PgpLiteralData)pgpFact.NextPgpObject();
if (!ld.FileName.Equals("test.txt") &&
!ld.FileName.Equals("_CONSOLE"))
{
Fail("wrong filename in packet");
}
if (!ld.ModificationTime.Equals(TestDateTime))
{
Fail("wrong modification time in packet: " + ld.ModificationTime + " vs " + TestDateTime);
}
Stream unc = ld.GetInputStream();
byte[] bytes = Streams.ReadAll(unc);
if (pbe.IsIntegrityProtected() && !pbe.Verify())
{
Fail("integrity check failed");
}
return(bytes);
}
/**
* decrypt the passed in message stream
*/
private static void DecryptFile(
Stream inputStream,
char[] passPhrase)
{
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory pgpF = new PgpObjectFactory(inputStream);
PgpObject o = pgpF.NextPgpObject();
//
// the first object might be a PGP marker packet.
//
PgpEncryptedDataList enc = o as PgpEncryptedDataList;
if (enc == null)
{
enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
}
PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
Stream clear = pbe.GetDataStream(passPhrase);
PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
//
// if we're trying to read a file generated by someone other than us
// the data might not be compressed, so we check the return type from
// the factory and behave accordingly.
//
o = pgpFact.NextPgpObject();
if (o is PgpCompressedData)
{
PgpCompressedData cData = (PgpCompressedData)o;
pgpFact = new PgpObjectFactory(cData.GetDataStream());
o = pgpFact.NextPgpObject();
}
PgpLiteralData ld = (PgpLiteralData)o;
Stream unc = ld.GetInputStream();
Stream fOut = File.Create(ld.FileName);
Streams.PipeAll(unc, fOut);
fOut.Close();
if (pbe.IsIntegrityProtected())
{
if (!pbe.Verify())
{
Console.Error.WriteLine("message failed integrity check");
}
else
{
Console.Error.WriteLine("message integrity check passed");
}
}
else
{
Console.Error.WriteLine("no message integrity check");
}
}